Sending code to ESP32 slow using EspruinoTools -- says "Set Slow Write = true"

flow control for ESP32 is set to UART_HW_FLOWCTRL_DISABLE
Just checked all options for flow control

• UART_HW_FLOWCTRL_DISABLE
  
• UART_HW_FLOWCTRL_RTS
  
• UART_HW_FLOWCTRL_CTS
  
• UART_HW_FLOWCTRL_CTS_RTS
  
• UART_HW_FLOWCTRL_MAX
  
  

All with RTS don't work.
All others have same speed.